[Algorithms] (no subject)

[Sylvain V. <vi...@ii...>]

> I'm using ID-based shadowbuffers at the moment. They're not soft, but
> then neither is any other current solution.

You can do soft shadows using volumes in the stencil buffer and the
alpha buffer, with a very small speed penality. Still it can be hard in
some case to live without the alpha buffer for other effects. And
tweaking the softing algo to get rid of flickering and of the "pill
effect" can be quite annoying sometimes.